Why?
Because there is little fun to be had any more. Perks eroded to uselessness. Asked to constantly do more with less. Tired of being pushed form pillar to post by meddling interfering half-wits who have never been anywhere near the frontline. Always travelling to and from desert ****-holes where there is little reason to be other than for George and Tony's half-arsed cock-and bull show. Not being valued for what we do or how well we do it (senior ivory-tower dwellers annual platitudes in the RAF News aren't worth the paper they are written on). Etc, etc, etc, et-bloody-cetera.
Loyalty is a one way bloody street in the RAF. Always 'Jam tomorrow, boys' but 'today you'll do as you're told, as often as you're told, until you're told otherwise'.
You getting the picture now? Which planet are you living on, anyway?